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  1. HVAC
    I am just a hobbyist and do automotive as well as home A/C. I am considering purchasing a refrigerant recovery machine and have a few questions: Is it safe to use the same recovery machine for both R134 (auto) and R410 (home)? Piggybacking #1, If I do a line purge when swapping from one...
  2. HVAC
    In the installation manual for a newer (somewhat higher SEER) Daikin outdoor compressor, in the "Pressure test and evacuating system" section starts off with a warning: Do not mix any substance other than the specified refrigerant R410A into the refrigeration cycle. I think most HVAC people...
  3. HVAC
    Hello, I have read that R410a should be added to a system as a liquid. But I have not read where there is really any issue with adding R410a as a gas to the low side service port? As long as it is added slowly, does anyone see a real problem with adding R410a to the suction service port at the...
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